Well you don't literally catch it in one place very soon . It runs around in the johto/kanto region. You have to catch it while it is standing in places where it's even visible out of battle. Then you can go to route 25/26 and meet it there and battle. For more info/example search" how to catch Suicune in pokemon heartgold/soulsilver"
Moltres, Zapdos, Articuno, Raikou/Suicune/Entei.
four without cheats Articuno Zapdos Moltres Mewtwo plus one of the legendary dogs; entei, suicune or raikou
If I want to get a shiny Pokemon then I use the Action Replay/Game Shark and Cheats but if you can't get it or something then when you are about to battle Suicune then save before you do and start battling him then if he is not a shiny Pokemon then just keep on trying.
you do need cheats
You Need Cheats The Wild Pokemon Modifier.
You cannot breed Legendary Pokemon without cheats, except for Manaphy with Ditto.
you can follow Mesprit and Cresselia in Pokemon d/p.however, if you have action replay there are cheats fo r entei, raikou, and suicune as following Pokemon
No Pokemon game has cheats sorry.
Without cheats they randomly appear in the wild or hatch from eggs.
there are a ton of cheats for Pokemon games but i can't figure some out. : (
counting cheats its 34 without cheats 22
You can't without cheats.